Alex Witt, a blonde, blue- eyed weekend anchor for MSNBC, is being sued by her former best friend for failing to repay a $65,000 loan.

Stephanie Jones charges that Witt had enough dough to take a trip to Barcelona with her daughter and drive a Porsche 911, but not to pay back a dear friend.

Witt eventually agreed to pay Jones $500 a month, but has done so sporadically, forking over just $1,375, according to the lawsuit Jones filed last week in Manhattan Supreme Court.

Jones last heard from Witt last summer, and waited patiently as the television host inked a $200,000 contract from MSNBC in the fall.

“She just fell off the face of the Earth,” she said.

Witt was in deep credit-card debt and about to get hit with a “sizable penalty” for abandoning her Westchester condo when she turned to her best gal pal for help back in December 2009, according to legal papers.

The 49-year-old Bronxville beauty explained to Jones that her TV-producer husband, Bill Sorensen, was out of work, and she was waiting on a new contract from MSNBC. She was so strapped, Jones said, that she could not afford to send daughter Caroline on a school trip to Scotland that son Charles was attending.

Jones, 49, a successful Manhattan lawyer and real-estate flipper, promptly wrote her a check for $65,000 — at 7.5 percent interest.

“It didn’t occur to me there would be a problem loaning her money,” Jones told The Post. “She’s paid me back [in the past].”

“I could cite example after example of strained living,” Witt wrote in an e-mail to Jones in February 2010, “beginning with not affording new clothes for myself — this is for a woman who works on TV, and whose professional existence depends on keeping up appearances.

“Your money went to the housing debacle with the move. Getting Caroline to Scotland with her brother. And paying a max’d [sic] out credit card that I am saving to likely use to pay for Charlie’s 1st year of college.

“Now I feel sick. Because the last thing I want is to have this hanging over our heads like Damocles sword,” Witt wrote, according to court papers.

The MSNBC anchor claims she no longer has the Porsche. Her husband briefly returned to work, but is now unemployed again, according to lawyers. Witt did not return a call for comment.

“It’s just a very sad thing,” said Jones, who is suing to get back the unpaid cash plus unspecified damages, and a promise from Witt to never contact her again.